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數學傳播39卷4期, 平面幾何公式思考
Author:
Yu-Tuan Lin
New Resources
球体的体积推导（优化版）
画直线等分三角形的面积
判斷球體
球体的体积推导
兩位數加法
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等差數列等差數列
展開圓面積 (講義版)
cube 3D
directed number_the age of father and son
矩形的極式
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Indefinite Integral
Kite
Optimization Problems
Quadratic Equations
Random Variables